Kinetic and mechanism of the gas-phase pyrolysis of exo-2-norbornyl formate

MAHECHA, GENESYS; CARTAYA, LORIETT; MALDONADO, ALEXIS; ALVARADO, YSAIAS; CHUCHANI, GABRIEL

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

ELSEVIER SCIENCE BV

Año: 2017 vol. 124 p. 563 - 563

0165-2370

he rate coefficient of the gas-phase pyrolysis or elimination of exo-2-norbornyl formate was determined in a deactivated, static reaction vessel over the temperature range 300–350 °C and pressure range 41–105 Torr. The substrate exo-2-norbornyl formate yielded surprisingly exo-2-norborneol and CO gas. This reaction, in the presence or absence of the free radical inhibitor toluene, proved to be homogeneous, unimolecular and follows a first-order rate law. The rate of equation is given by the following Arrhenius equation: log k1 (s−1) = (13.85 ± 0.23) − (194.6 ± 2.7)kJ mol−1(2.303RT)−1, r = 0.9998. Experimental data suggested a semi-polar concerted three-membered cyclic transition state type of mechanism.